Combination muffler and air-heating device.



T. M. RINEHART.

COMBINATION MUFFLER AND AIR HEATING DEVICE.

APPLICATION FILED AUG,20. 19]].

Patented Oct. 8 1918,

I III IVA A TTOR/VE Y THOMAS M. RINEHART, 01? DALLAS, TEXAS.

COMBINATION MUFFLER AND AIR-HEATING DEVICE.

Specification of Letters Patent.

Patent ed Oct. 8, 1918.

Application filed August 20, 1917. Serial No. 187,150.

To all whom it ma concern:

Be it known t at I, THoMAs M. RINE- HART, a citizen of the United States of America, residin -at Dallas, in the county of Dallas, State of Texas, have invented a certain new and useful Improvement in Combination Mufflers and Air-Heating Devices, of which the following is a specification.

This invention relates to a new and useful form of mufiler for silencing the explosions due to the exhaust of internal combustion engines and embodies a means for heating fresh air for use in facilitating the carburetion of liquid fuel oil to a combustible gaseous mixture.

' An object of the invention is to provide a combined form of automobile engine muffler and fresh air, heating device which will comprise an inclosed chamber with suitable air passages, and which device may be interposed at any convenient point in the ex? haust tube which leads from the engine to the rear of the automobile. The device includes means for connecting the usual form of fuel oil carbureter with an of the heatin device.

With the a ove and otherobjects in view the invention has relation to a certain combination and arrangement of parts, an example of which is described in the following specification, pointed out in the appended claims and illustrated in the accompanying drawings; wherein,

Figure 1 illustrates a longitudinal sectional view of this combined automobile engine mufiler and air heater for carbureter.

.Fig. 2 illustrates a cross sectional View of said device.

Referrin now more in articular to the drawings, file numeral 1 of metal disk heads s aced apart and supporting a plurality o tubular members 2, which tubes have each extremity thereof formed open. A cylindrical shell 3, provided with suitable flanges formed on the extremity thereof, is carried between the disk heads 1, while a second cylindrical shell 4 is placed. upon the heads concentrically with the shell 3. This assembly of parts provides an annular space. 5 between the walls of the two shells passing around the said device. The shell 3 is provided with a plurality of inlets 6 which allow communication between the chamber 5 and the interior of the device. A partition or baffle plate 7 is centrally located within the inoutlet air duct esignates a pair closed chamber and supported between the heads thereof in any suitable manner. The baflle plate is provided with openings 8 of required number and size. The openings will preferably be formed in the baflle plate near one end thereof while the openings 6 y will preferably beformed in the shell at the opposite end thereof.

Closure heads comprising a substantially large flanged member 9 are fixed upon the extremities of the heating mulller in any suitable manner and, as is illustrated, are fixedto the disk heads by bolts 10 passing through the several parts to be held. The heads 9 are provided with tubular extensions 10.

An air duct 11 is passed through the outer shell 4 and has direct attachment with the inner shell 3. A tube 12, which will preferably be of a diameter slightly increased over that of the duct 11 is connected to the tube 12 through a reduction coupling 13. The member 12 carries a coil 14 which has its two extremities extended upwardly through openings in the tube 12. One of the threaded extremities of the tube will be connected to the pipe leading to the fuel tank ner.

This muffler heating device is provided with the tubular extensions 10 for the purpose of connecting it into the exhaust manifold. The exhaust gases pass into one head and on through the many tubes 2 and out of the muffler through the other head into the exhaust tube. The plurality of thin wall tubes 2 serve to absorb and take up the heat from the exhaust which passes outwardly through the other head into the exhaust tube or atmosphere- A substantially large opening 15 is formed in the shell 4 for the purpose of admitting fresh air into the annular space 5.

The tube 12 will be connected up with the carbureter of the engine and during the and draft is set up through the tube and duct 11 passing all the way between and around the plurality of tubes 2. This serves running of the motor a considerable suction The use of this combined form of muflier' and generator on an automobile effectively provides a combined device which will mufiie the sound of the engine without creating a back pressure and will also increase to a marked degree the efficiency of economy of the engine.

The invention is presented to include all changes and modifications in design and form as may be construed to come within the meaning of the following claims.

Claims.

1. In a combined form of heating device and mufiier, the combination with a pair of cylindrical shells one of less diameter than the other concentrically arranged with an annular space formed therebetween and an opening to permit air to pass into this annular space, of a plurality of heating tubes with open extremities arranged interiorly of the smaller shell, and closure heads to connect the tubes with the exhaust manifold of an engine, and a duct connecting with one of the shells adapted to convey fresh heated air therefrom and supporting means to retain the heatin tubes.

2. In a combined form of muffler and heatin device, the combination with suit-- able disk heads, of a plurality of heating tubes disposed therebetween, of a pair of concentrically arranged shells arranged around the heating tubes and providing an annular chamber therebetween and an enlarged opening from the atmosphere into the annular chamber, a bafile plate with openingstherein fixed within the inner shell, and a hot air duct connecting with the inner shell for drawing off warm air for any desired purpose, closure heads for the outer shell, and provision for connecting the device up with the exhaust manifold of an engine. V

3. In a combined form of heating device and mufller for silencin engine and heating air or use in carbureting fuel for the same engine, the combination with a pair of concentrically arranged shells with suitable opening in the outer shell to communicate with the atmosphere, a plurality of heating tubes arranged interiorly of the inner shell, and closure headswith tubular extensions fitted on each endof the outer shell for connecting the heating device into the exhaust pipe of an enine, and a duct connectlng. with the inner hand.

THOMAS M. RINEHART.

the sound of an,

shell of the heating device for drawing ofi' 

